The Zipp VumaQuad Ceramic Bottom Bracket is the dedicated bearing interface for Zipp's VumaQuad and VumaChrono cranksets, available in both English threaded and BB30 standards to suit your frame. Ceramic bearings are specified throughout, reducing friction and rolling resistance compared to standard steel alternatives for a noticeably smoother pedal stroke. If you're running a Zipp Vuma crank, this is the bottom bracket built to match it. Compatibility matters with bottom brackets, and Zipp has designed this unit to work in close tolerance with the VumaQuad and VumaChrono crank systems specifically — so the fit, bearing preload, and interface geometry are dialed from the start. Whether you're threading into a traditional English shell or pressing into a BB30 frame, the correct variant keeps everything aligned and properly supported through hard efforts and long hours in the saddle. Zipp VumaQuad Ceramic Bottom Bracket Specs at a Glance Bearing type: Ceramic Compatible cranks: Zipp VumaQuad, Zipp VumaChrono Available standards: English (BSA threaded), BB30 Product type: Threaded bottom bracket
